I have a simple question to those that claim that they always back in, and it is the easiest and safest way to park: Why do 99.9% of people park with nose-in, if the backing in is the greatest thing since sliced bread?
Although your "99.9%" is hyperbole, I will acceded that, in the US at least, a lot - and probably the majority - of drivers do prefer to park nose-in. My answer to your question is, with exceptions, that is testimony to those drivers' ineptitude with automobiles. There ARE exceptions, such as a tacit admission that other drivers in a parking lot likewise are dingbatty enough not to provide appropriate leeway to a vehicle that is about to execute a back-up/back-in maneuver, which just demonstrates a further degree of incompetence and rudeness in the driving community.
Regardless, as long as cars have as the front axle their turning axle, it always will be easier to back into a spot than to nose in . 100% of the time. Stomp and rant and hissyfit all you want, but that's an indisputable law of mechanics. And with Tesla's back-up cameras - good gravy, it can't get any easier!